EP0743238B1 - Détecteur de force de pédalage pour bicyclette assistée à moteur - Google Patents

Détecteur de force de pédalage pour bicyclette assistée à moteur Download PDF

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Publication number
EP0743238B1
EP0743238B1 EP96107128A EP96107128A EP0743238B1 EP 0743238 B1 EP0743238 B1 EP 0743238B1 EP 96107128 A EP96107128 A EP 96107128A EP 96107128 A EP96107128 A EP 96107128A EP 0743238 B1 EP0743238 B1 EP 0743238B1
Authority
EP
European Patent Office
Prior art keywords
pedaling force
crank
crank shaft
shaft
force detecting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96107128A
Other languages
German (de)
English (en)
Other versions
EP0743238A1 (fr
Inventor
Masaaki c/o Honda Gijutsu Kenkyusho Matsuura
Masahiro c/o Honda Gijutsu Kenkyusho Kuroki
Takuya c/o Honda Gijutsu Kenkyusho Tagami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP0743238A1 publication Critical patent/EP0743238A1/fr
Application granted granted Critical
Publication of EP0743238B1 publication Critical patent/EP0743238B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
    • B62J45/40—Sensor arrangements; Mounting thereof
    • B62J45/41—Sensor arrangements; Mounting thereof characterised by the type of sensor
    • B62J45/411—Torque sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
    • B62J45/40—Sensor arrangements; Mounting thereof
    • B62J45/42—Sensor arrangements; Mounting thereof characterised by mounting
    • B62J45/421—Sensor arrangements; Mounting thereof characterised by mounting at the pedal crank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/45—Control or actuating devices therefor
    • B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/55—Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts

Definitions

  • This invention relates to a motor assisted bicycle in which a power transmission device for transmitting the pedaling force on the crank pedals to the wheels is provided with an assisting motor, and the output of the assisting motor is controlled based on the pedaling force on crank pedals detected by pedaling force detecting means, and more particularly to the pedaling force detecting means.
  • Japanese Patent Laid-open No. Hei 4-365690 (1992) discloses a pedaling force detecting device for a motor assisted bicycle.
  • the above-mentioned motor assisted bicycle is provided with a sun gear, ring gear, and a planetary gear mechanism comprising a planetary carrier and planetary gear, the pedaling force on crank pedals inputted to the crank shaft is transmitted to the rear wheel through planetary carrier, planetary gear, and ring gear, and the torque inputted to the ring gear is transmitted to the rear wheel.
  • the magnitude of the pedaling force on the crank pedals is detected based on rotational reaction force of the sun gear.
  • the present invention is accomplished to solve the above-mentioned problem, and it is an object of the present invention to provide a pedaling force detecting device of a motor assisted bicycle which detects the pedaling force on crank pedals precisely with a device of simple structure.
  • the invention described in claim 1 involves a motor assisted bicycle with a pedaling force detecting device having a power transmission device for transmitting pedaling force on crank pedals to a wheel and having an assisting motor, the output of which is controlled in dependency of a pedaling force produced by operation of the crank pedals and detected by a pedaling force detecting means, wherein said bicycle is provided with a gear holder supported rotatably on the periphery of a crank shaft carrying the crank pedals, an output member for transmitting a torque to the wheel supported rotatably on the periphery of the crank shaft, and a spur gear arrangement for transmitting the rotational moment of the crank shaft to the output member through an idle shaft supported in parallel to the crank shaft, characterized in that the idle shaft is supported in the gear holder, and the pedaling force detecting means is arranged for detecting the pedaling force as a rotational moment around the crank shaft exerted on the gear holder.
  • the idle shaft is supported in parallel with the crank shaft in the gear holder supported rotatably on the periphery of the crank shaft, the torque of the crank shaft is transmitted to the output member supported rotatably on the periphery of the crank shaft through the spur gear arrangement via the idle shaft, therefore, the torque of the crank shaft is transmitted to the output member without using planetary gear mechanism having many parts or bevel gear which is low in power transmission efficiency, thereby, the structure can be simplified and the power transmission efficiency can be improved.
  • the force is detected based on the rotational moment exerted to the gear holder corresponding to the pedaling force, therefore, the influence of frictional force of parts is suppressed to the minimum, and the pedaling force is detected precisely.
  • the gear ratio of the spur gear arrangement the magnitude of torque transmitted from the crank pedals to the wheels is controlled without restriction.
  • the invention described in the claim 2 in addition to the structure described in the claim 1, involves the pedaling force detecting device for a motor assisted bicycle in which the gear holder is accommodated in the housings supporting the crank shaft, a pedaling force detecting projection provided on the gear holder is structured so as to be in contact with the pedaling detecting means provided on the housings.
  • the gear holder is contained in the housing which supports the crank shaft and the pedaling force detecting projection provided on the gear holder is in contact with the pedaling force detecting means provided in the housing, thereby, the rotational moment of the gear holder is detected directly to improve more the precision for detection.
  • the rotation of rotors of the assisting motor located so as to surround the periphery of the crank shaft is transmitted to the output member through a first one-way clutch. While the assisting motor is not in motion, the first one-way clutch slips, thereby, the rotation of the crank shaft is rotated by the crank pedals without any hindrance.
  • the rotors of the assisting motor are located so as to surround the periphery of the crank shaft and the rotors are connected to the output member through the first one-way clutch, thereby, the assisting motor can be located coaxially with the crank shaft to minimize the size, and also while stopping of the assisting motor, the first one-way clutch is allowed to slip, thereby, the crank shaft is rotated by the crank pedals without hindrance.
  • the invention described in the claim 4 in addition to the structure described in the claim 1, involves the pedaling force detecting device of a motor assisted cycle wherein a second one-way clutch is provided to the spur gear arrangement for transmitting the torque or the crank shaft to the output member through the idle shaft.
  • the rotation of the crank shaft is transmitted to the output member through the spur gear arrangement provided with the second one-way clutch. Slipping of the one-way clutch allows the crank pedals to reversely rotate freely.
  • the second one-way clutch is provided to the spur gear arrangement for transmitting the torque of the crank shaft to the output member through the idle shaft, thereby, the crank pedals can be rotated reversely as desired to adjust the rotational position as desired.
  • Fig. 1 to Fig. 4 illustrate the first embodiment of the present invention.
  • Fig. 1 is a side view of a whole bicycle.
  • Fig. 2 is a enlarged cross-sectional back view of a power unit on the line 2-2 of Fig. 3.
  • Fig. 3 is a cross-sectional view on the line 3-3 of Fig. 2.
  • Fig. 4 is an exploded perspective view of the gear holder.
  • a bicycle B is provided with a V-shaped main frame 1 in the side view, handles 4 and a front wheel Wf are supported respectively on the top and bottom of a front fork 3 supported rotatably on a head pipe 2 provided on the front end of the main frame 1.
  • the rear wheel Wr is supported by a rear fork 6 and 6 extending from the near bottom end of the main frame 1 backward which rear fork 6 and 6 is reinforced by a stay 5 and 5.
  • the crank shaft 7 supported rotatably on the bottom end of the main frame is provided with a right and left pair of crank arms 8 L and 8 R , and the crank pedals 9 L and 9 R are provided at the ends of the crank arm 8 L and 8 R .
  • a driving sprocket 10 rotated by the crank shaft 7 and a driven sprocket 11 provided on the wheel shaft of the rear wheel are connected with a chain 12, when the crank shaft 7 is rotated by pedaling force to the crank pedals 9 L and 9 R , the rotation is transmitted to the rear wheel Wr through the driving sprocket 10, chain 12, and driven sprocket 11.
  • the power unit P provided on the bottom of the main frame 1 is provided with the assisting motor 13 for generating driving force to assist the pedaling force of the crank pedals 9 L and 9 R .
  • a running battery 15 comprising a plurality of Ni-Cd batteries for driving the assisting motor 13 is contained in a battery box 14 provided in front of the main frame 1.
  • a controlling device 17 such as an electronic controlling unit and motor driver for controlling the driving of the assisting motor 13 is provided on the rear of the main frame 1.
  • the power unit P is provided with the left split housing 21 and right split housing 22 joined together with a plurality of bolts 20, mounting brackets 22 1 and 22 2 provided projectedly on the front face and top face of the right housing 22 are fixed on the power unit supporting member 23 welded on the bottom end of the main frame 1 with bolts 24 and 25, and the rear fork 6 and 6 is fixed on a right and left mounting brackets 22 3 and 22 3 provided projectedly on the back face of the right housing 22 with bolts 26 and 26.
  • the assisting motor 13 provided on the rear of the power unit P is provided with an output shaft 28 supported by a ball bearing 27 in the left housing 21, on the output shaft 28 the first sprocket 29 is fixed.
  • An intermediate shaft 31 is supported on the left housing 21 and right housing 22 by a pair of ball bearings 30 and 30 in the front bottom of the assisting motor, and the second sprocket 32 fixed to the intermediate shaft 31 and the above-mentioned first sprocket 29 are connected with a chain.
  • the crank shaft 7 passing through from right to left at the front portion of the power unit P is supported by the left housing 21 through a ball bearing 34 at the left end, and supported by the right housing 22 through a pair of needle bearings 35 and 35 provided on the periphery of the crank shaft, a sleeve 36 engaged rotatably on the needle bearings 35 and 35, a ball bearing 37.
  • the first spur gear 38 formed solidly with the intermediate shaft 31 is engaged with the second spur gear 40 supported on the periphery of the sleeve 36 through the first one-way clutch 39.
  • the above-mentioned driving sprocket 10 is split-spline jointed on the right end of the sleeve 36 projecting outward from the right housing 22 and fixed with nuts 41.
  • the torque of the output shaft 28 is transmitted to the driving sprocket 10 through the first sprocket 29, chain 33, second sprocket 32, intermediate shaft 31, first spur gear 38, second spur gear 40, first one-way clutch 39, and sleeve 36, and then transmitted to the rear wheel Wr through chain 12 and driven sprocket 11.
  • the first one-way clutch 39 slips so that the rotation of the driving sprocket 10 by pedaling force on the crank shaft 9L and 9R is not hindered.
  • the one-way clutch 39 is provided on the down flow of the power transmission system from the assisting motor to driving sprocket 10, therefore, when running manually, the pedaling force to overcome the friction force of the above-mentioned power transmission system is unnecessary.
  • the gear holder 45 comprising the left half body 42 and right half body 43 combined with four bolts 44 is supported rotatably on the periphery of the crank shaft 7 and on the periphery of the sleeve 36 through the ball bearings 46 and 47.
  • the idle shaft 49 is supported by the gear holder 45 through a pair of ball bearings 48 and 48, and the third spur gear 51 supported by the crank shaft 7 through the second one-way clutch 50 is engaged with the fourth spur gear 52 formed on the idle shaft 49.
  • the fifth spur gear 53 fixed on the idle shaft is engaged with the sixth spur gear 54 formed on the sleeve 36.
  • Notches 42 1 and 43 1 are formed on the left half body 42 and right half body 43 of the gear holder 45 to prevent the interference with the fifth spur gear 53.
  • crank shaft 7 when the crank shaft 7 is rotated normally by pedaling the crank pedals 9 L and 9 R , the torque of the crank shaft 7 is transmitted to the driving sprocket 10 through the second one-way clutch 50, the third spur gear 51, fourth spur gear 52, idle shaft 49, fifth spur gear 53, sixth spur gear 54, and sleeve 36, then, transmitted to the rear wheel Wr through chain 12 and driven sprocket 11.
  • the crank shaft 7 is rotated reversely by pedaling the crank pedals 9 L and 9 R , or when pedaling on the crank pedals 9 L and 9 R is stopped during running and the crank shaft is brought to a stop, the second one-way clutch 50 is allowed to slip and the reverse rotation or stopped suspension of the crank shaft 7 is possible.
  • a pedaling force detecting projection 43 2 and stopper projection 43 3 are formed solidly on the periphery of the right half body 43 of the gear holder 45.
  • the pedaling force sensor 55 comprising a thick film resistor type load cell fixed on the right housing 22 is in contact with the pedaling force detecting projection 43 2 , a stopper bolt 56 screwed in the right housing 22 is in contact with the stopper projection 43 3 .
  • the rotation sensor 57 fixed on the right housing 22 is engaged loosely in a hole 42 2 formed on the left half body 42 of the gear holder 45, and facing to the periphery of the third spur gear 51. Signals from the pedaling force sensor 55 and rotation sensor 57 are processed in the controller 17, and based on the result, the operation of the assisting motor 13 is controlled.
  • crank shaft 7 When a rider pedals the crank pedals 9 L and 9 R with the power switch 16 turned on to run assisted, the crank shaft 7 is rotated through the crank arms 8 L and 8 R , the torque of the crank shaft 7 is transmitted to the driving sprocket 10 through the second one-way clutch 50, third spur gear 51, fourth spur gear 52, idle shaft 49, fifth spur gear 53, sixth spur gear 54, and sleeve 36.
  • the controller 17 map-sorts the assisting torque based on the pedaling force detected by the pedaling force sensor 55 and the bicycle speed detected by the rotation sensor 57, and controls the driving of the assisting motor 13 to exert the assisting torque.
  • the torque of the output shaft 28 of the assisting motor 13 is transmitted to the driving sprocket 10 through the first sprocket 29, chain 33, second sprocket 32, intermediate shaft 31, first spur gear 38, second spur gear 40, first one-way clutch 39, and sleeve 36, thus, the running is assisted by the assisting motor 13.
  • a driving sprocket 10 with a large diameter is required, however, in the present invention by using a spur gear arrangement comprising the third spur gear 51, fourth spur gear 52, fifth spur gear 53, and sixth spur gear 54 with a suitably prescribed gear ratio, the use of a large driving sprocket 10 is avoidable.
  • the second embodiment is an example in which the assisting motor 13 is provided coaxially with the crank shaft 7 to minimize the power unit P.
  • the assisting motor 13 is provided with a stator 60 fixed on the inside face of the right housing 22 and rotors 61 supported on the periphery of the sleeve through the first one-way clutch 39, the torque of the assisting motor 13 is transmitted directly to the sleeve 36 through the first one-way clutch 39.
  • the first sprocket 29, chain 33, second sprocket 32, intermediate shaft 31, first spur gear 38, and second spur gear 40 of the first embodiment is needless, the number of necessary parts are further reduced and the size of the power unit is further minimized.
  • a thick film resistor type load cell is described as the pedaling force sensor 55 in the embodiment, however otherwise, minimized deformation sensors such as strain gauge type load cell and piezoelectric element may be used.
  • the assisting motor 13 may be provided separately instead of the assisting motor 13 incorporated in the power unit P.
  • the gear holder 45 and driving sprocket 10 are supported rotatably on the periphery of the crank shaft 7 rotated by the crank pedals, the torque of the crank shaft 7 is transmitted to the driving sprocket 10 through a spur gear arrangement comprising four spur gears 51 to 54 via the idle shaft 49 provided to the gear holder 45.
  • the torque of the assisting motor 13 is transmitted to the driving sprocket 10 through the chain 33 wound around the sprockets 29 and 32 and two spur gears 38 and 40.
  • the pedaling force on the crank pedals is detected based on the rotational moment which is exerted in the direction to rotate the gear holder around the crank shaft 7 corresponding to the pedaling force.

Claims (4)

  1. Une bicyclette assistée à moteur pourvue d'un dispositif de mesure de la force de pédalage, ladite bicyclette ayant un dispositif de transmission de puissance conçu pour transmettre la force de pédalage exercée sur des pédales de pédalier (9L et 9R) à une roue (Wr) et ayant un moteur auxiliaire (13), dont la puissance est commandée d'après la force de pédalage produit par l'actionnement des pédales de pédalier (9L et 9R) et mesurée par des moyens de mesure de la force de pédalage (55), dans laquelle ladite bicyclette comprend :
    un support de roue dentée (45) monté tournant sur la périphérie d'un pédalier (7) portant les pédales de pédalier,
    un organe de sortie (10) conçu pour transmettre un couple à la roue (Wr) supporté à rotation sur la périphérie du pédalier (7), et
    un agencement de pignon droit (51 à 54) conçu pour transmettre le couple de rotation du pédalier (7) à l'organe de sortie (10) via un axe de renvoi (49) supporté en parallèle par rapport au pédalier (7), caractérisée en ce que
    l'axe de renvoi (49) est monté dans le support de pignon (45), et les moyens de mesure de la force de pédalage (55) sont agencés de façon à mesurer la force de pédalage à titre de couple de rotation autour du pédalier (7), exercé sur le support de pignon (45).
  2. Bicyclette assistée à moteur pourvue d'un dispositif de mesure de la force de pédalage selon la revendication 1, dans laquelle le support de pignon (45) est logé dans des boítiers (21 et 22) supportant le pédalier (7), une saillie de mesure de la force de pédalage (432) prévue sur le support de pignon (45) étant conçue de manière à être en contact avec les moyens de mesure de la force de pédalage (55) prévus sur les boítiers (21 et 22).
  3. Bicyclette assistée à moteur pourvue d'un dispositif de mesure de la force de pédalage selon la revendication 1, dans laquelle des rotors (61) du moteur auxiliaire (13) sont placés de manière à entourer la périphérie du pédalier (7), et les rotors (61) sont reliés à l'arbre de sortie (10) via un premier embrayage à roue libre (39).
  4. Bicyclette assistée à moteur pourvue d'un dispositif de mesure de la force de pédalage selon la revendication 1, dans laquelle un deuxième embrayage à roue libre (50) est prévu sur l'agencement de pignon droit (51 à 54) afin de transmettre le couple du pédalier (7) à l'organe de sortie (10) via l'axe de renvoi (49).
EP96107128A 1995-05-17 1996-05-06 Détecteur de force de pédalage pour bicyclette assistée à moteur Expired - Lifetime EP0743238B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11831795A JP3547847B2 (ja) 1995-05-17 1995-05-17 アシストモータ付き自転車における踏力検出装置
JP118317/95 1995-05-17

Publications (2)

Publication Number Publication Date
EP0743238A1 EP0743238A1 (fr) 1996-11-20
EP0743238B1 true EP0743238B1 (fr) 1999-04-07

Family

ID=14733685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107128A Expired - Lifetime EP0743238B1 (fr) 1995-05-17 1996-05-06 Détecteur de force de pédalage pour bicyclette assistée à moteur

Country Status (6)

Country Link
EP (1) EP0743238B1 (fr)
JP (1) JP3547847B2 (fr)
CN (1) CN1064316C (fr)
DE (1) DE69601972T2 (fr)
ES (1) ES2131361T3 (fr)
TW (1) TW284733B (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3327079B2 (ja) * 1995-11-29 2002-09-24 松下電器産業株式会社 電気自転車
GB2312403B (en) * 1996-04-26 1998-03-25 Giant Mfg Co Bicycle equipped with electrical driving device
DE19629788A1 (de) * 1996-06-22 1998-01-02 Bk Tech Gmbh Elektrobike Flyer Antriebseinheit
EP0832816A1 (fr) * 1996-09-26 1998-04-01 Mitsubishi Heavy Industries, Ltd. Unité de propulsion pour une bicyclette avec moteur électrique
DE69734900T2 (de) * 1996-12-16 2006-07-13 Honda Giken Kogyo K.K. Hilfsantrieb für Fahrräder
JP2002508281A (ja) 1997-12-12 2002-03-19 ベーカーテク アクチエンゲゼルシャフト 駆動装置及びトルクセンサ、並びにトルクセンサの製造方法
US6595072B2 (en) * 2001-10-22 2003-07-22 Gordon Liao Sensor of the pedaling force of a power-assisting bike
CN100406343C (zh) * 2004-09-27 2008-07-30 捷安特(中国)有限公司 电动自行车中置驱动同轴式动力组
JP4612061B2 (ja) * 2008-01-04 2011-01-12 ヤマハモーターエレクトロニクス株式会社 電動自転車用駆動装置
NL2002322C2 (nl) * 2008-12-12 2010-06-15 Indes Holding Bv Door menskracht aangedreven voertuig en werkwijze voor het aandrijven van een dergelijk voertuig.
JP2011025765A (ja) * 2009-07-22 2011-02-10 Sanyo Electric Co Ltd 折りたたみ式電動補助自転車
DE102009045813A1 (de) 2009-10-19 2011-04-21 Philippe Kohlbrenner Antrieb für ein Radfahrzeug
CN102514679B (zh) * 2011-12-29 2014-01-01 太仓市悦博电动科技有限公司 一种线圈感应力矩传感器中置电机传动系统
CN103569304B (zh) * 2012-07-30 2015-11-18 稳正企业股份有限公司 电动自行车动力辅助传动系统
JP5628880B2 (ja) 2012-10-25 2014-11-19 株式会社シマノ 駆動ユニット
JP5685574B2 (ja) * 2012-12-10 2015-03-18 株式会社シマノ 自転車用駆動ユニット
US8777791B1 (en) 2013-02-07 2014-07-15 Shimano Inc. Bicycle drive unit
US9227694B2 (en) 2013-07-31 2016-01-05 Shimano Inc. Bicycle drive unit
CN107878640A (zh) * 2017-12-12 2018-04-06 成都黑贝智能科技有限公司 具有显示设备的自行车
FR3091517B1 (fr) * 2019-01-08 2022-07-15 Mavic Sas Dispositif d’assistance électrique pour vélo
WO2023236046A1 (fr) * 2022-06-07 2023-12-14 Chan Yuk Chun Jon Ensemble d'entraînement à assistance électrique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026375A (en) * 1976-04-09 1977-05-31 Honda Giken Kogyo Kabushiki Kaisha Bicycle with an internal combustion engine
JPH04365690A (ja) * 1991-06-04 1992-12-17 Yamaha Motor Co Ltd 電動モータ付き自転車
US5570752A (en) * 1993-07-26 1996-11-05 Yamaha Hatsudoki Kabushiki Kaisha Transmission arrangement for electric power assisted bicycle

Also Published As

Publication number Publication date
EP0743238A1 (fr) 1996-11-20
ES2131361T3 (es) 1999-07-16
CN1140681A (zh) 1997-01-22
JPH08310478A (ja) 1996-11-26
JP3547847B2 (ja) 2004-07-28
CN1064316C (zh) 2001-04-11
TW284733B (en) 1996-09-01
DE69601972D1 (de) 1999-05-12
DE69601972T2 (de) 1999-08-05

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